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linux-libre
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sound
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usb
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endpoint.h

endpoint.h 1.3 KB
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  1. #ifndef __USBAUDIO_ENDPOINT_H
    2. 

  2. #define __USBAUDIO_ENDPOINT_H
    3. 

  3. 

  4. #define SND_USB_ENDPOINT_TYPE_DATA     0
    5. 

  5. #define SND_USB_ENDPOINT_TYPE_SYNC     1
    6. 

  6. 

  7. struct snd_usb_endpoint *snd_usb_add_endpoint(struct snd_usb_audio *chip,
    8. 

  8. 					      struct usb_host_interface *alts,
    9. 

  9. 					      int ep_num, int direction, int type);
    10. 

  10. 

  11. int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep,
    12. 

  12. 				snd_pcm_format_t pcm_format,
    13. 

  13. 				unsigned int channels,
    14. 

  14. 				unsigned int period_bytes,
    15. 

  15. 				unsigned int period_frames,
    16. 

  16. 				unsigned int buffer_periods,
    17. 

  17. 				unsigned int rate,
    18. 

  18. 				struct audioformat *fmt,
    19. 

  19. 				struct snd_usb_endpoint *sync_ep);
    20. 

  20. 

  21. int  snd_usb_endpoint_start(struct snd_usb_endpoint *ep);
    22. 

  22. void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep);
    23. 

  23. void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep);
    24. 

  24. int  snd_usb_endpoint_activate(struct snd_usb_endpoint *ep);
    25. 

  25. void snd_usb_endpoint_deactivate(struct snd_usb_endpoint *ep);
    26. 

  26. void snd_usb_endpoint_release(struct snd_usb_endpoint *ep);
    27. 

  27. void snd_usb_endpoint_free(struct snd_usb_endpoint *ep);
    28. 

  28. 

  29. int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep);
    30. 

  30. int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep);
    31. 

  31. 

  32. void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep,
    33. 

  33. 			     struct snd_usb_endpoint *sender,
    34. 

  34. 			     const struct urb *urb);
    35. 

  35. 

  36. #endif /* __USBAUDIO_ENDPOINT_H */
    37. 

  37.